Releases · alexheretic/ab-av1

Support setting --enc-input hwaccel=none --enc-input hwaccel_output_format=none to omit defaults
for *_vaapi, *_vulkan vcodecs introduced in v0.9.4.

--pix-format no longer generally defaults to "yuv420p", instead if not specified no -pix_fmt
will be passed to ffmpeg allowing use of upstream defaults.
However, libsvtav1, libaom-av1 & librav1e will continue to default to "yuv420p10le".
Allow specifying ffmpeg decoder using --enc-input c:v=CODEC.

Encoder *_vaapi: Default args --enc-input hwaccel=vaapi --enc-input hwaccel_output_format=vaapi.
Encoder *_vulkan: Map --crf to ffmpeg -qp.
Encoder *_vulkan: Default args --enc-input hwaccel=vulkan --enc-input hwaccel_output_format=vulkan.
Encoder libvvenc: Map --crf to ffmpeg -qp.

Support setting per-stream audio codec, e.g. --enc c:a:1=libopus.
Support --pix-format yuv422p10le.
Write video stream metadata "AB_AV1_FFMPEG_ARGS" to encoded output, include a subset of relevant
ffmpeg args used. E.g. AB_AV1_FFMPEG_ARGS: -c:v libsvtav1 -crf 25 -preset 8.

Log crf results, instead of printing, if stderr is not a terminal.
Wait for all child processes (ffmpeg etc) to finish before temp file cleanup and exit.

Fix xpsnr inf score parsing.
Fix xpsnr reference vfilter usage.
Add --xpsnr-fps: Frame rate override used to analyse both reference & distorted videos. Default 60.

Add XPSNR support as a VMAF alternative.
- Add sample-encode --xpsnr arg which toggles use of XPSNR instead of VMAF.
- Add crf-search, auto-encode --min-xpsnr arg (alternative to --min-vmaf).
- Add xpsnr command for measuring XPSNR score.
Support negative --preset args.
Add --vmaf-fps: Frame rate override used to analyse both reference & distorted videos. Default 25.
Omit data streams when outputting to matroska (.mkv or .webm).
Omit audio, subtitle & data streams in VMAF calls to work around possible ffmpeg memory leaks.
mpeg2video: map --crf to ffmpeg -q and set default crf range to 2-30.

crf-search: Tweak 2nd iteration logic that slices the crf range at the 25% or 75% crf point.
- Widen to 20%/80% to account for searches of the "middle" two subranges being more optimal.
- Disable when using custom min/max crf ranges under half the default.
Add sample-encode info to crf-search & auto-encode. Show sample progress and encoding/vmaf fps.
Improve sample-encode progress format consistency.
Add crf-search -v flag to print per-sample results.
Add auto-encode -v flag to print per-crf results, -vv to also print per-sample results.

Use default .265, .264 image output extensions for libx265, libx264.
Fixes crf-search for images with these codecs.
Improve --vfilter docs, clarify VMAF usage.

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